Compression-coupling.



PATENTED SEPT. 15, 1903.

J. HUTOHISON. COMPRESSION COUPLING.

APPLICATION FILED FEB. 12, 1903.

N0 MODEL.

511 w 11 fez hn utahiso' 3 SHOT/mu UNIT D STATES Patented September 1 5, 1903.

I PATENT Qrricn.

COMPRESSION-COUPLING.

SEECIFICATION forming part of Letters Patent No. 738,809, dated September 15, 1903. Application filed February 12, 1903. Serial No. 143,027. (No model.)

To all whom, it may concern:

Be it known that I, JOHN HurcHIsoN, a citizen of the United States, residing at Jackson, in the county of Jackson and State of Michigan, have invented certain new and useful Improvements in Compression-Couplings; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in compression-couplings for shafts; and its object is to provide a simple and effective device having no projecting parts liable to catch in clothing or belts, to provide a device easily inclosed with a casing or cover, and to provide the same with certain new and usefulfeatures hereinafter more fully described,

and particularly pointed out in the claims.

My device consists, essentially, of a number of externally and oppositely tapered integral segmental clamps having segmental flanges provided with bolt openings and rings to surround the clamps and having tapered central openings and bolt-openings and bolts extending through the rings and flanges, as will hereinafter more fully appear by reference to the accompanying drawings, in which-= Figure 1 is a side elevation of a device embodying my invention; Fig. 2, an end elevation of the same; Fig. 3, a longitudinal section of the same on the line 3 3 of Fig. 2; Fig. 4, a detail of one of the rings; Fig. 5, a side View of one of the clamping-segments; Fig. 6, an end view of the same, and Figs. 7 and 8 a modification of Figs. 4 and 6.

Like letters refer to like parts in all of the figures.

A A represent the adjacentends of two alined shafts coupled by my device.

B represents the clamping-segments, preferably three in' number, each having a longitudinal and transversely-concave channel to fit the shafts and oppositely-tapered and convex outer surfaces. These segments are also each provided at the middle with a trans verse segmental flange E, having two boltholes G, arranged sixty degrees apart. O represents ribs extending longitudinally of the outer surfaces of the clamping-segments.

F F are suitable rings, each having a suitably-tapered central opening to fit the outer tapered surfaces of the clamping-segments and recesses O to engage the rib O. Said rings are also each provided with bolt-holes G, arranged one hundred and twenty (120) degrees apart and thirty (30) degrees from radial lines extending through the recesses O. The rings F and segmental flanges E are of the same outside diameter, whereby they may be readily covered by any suitable tubular casing. (Not shown.) The bolts G are inserted in the rings from opposite directions and oppositely through the segmental flanges E, with their projecting ends and nuts between the flanges and rings and opposite the recesses D in the clamping-segments.

In some cases it is preferable 'to reverse the position of the ribs 0 and grooves O, as shown in Figs. 7 and 8, thus securing a somewhat stronger ring of given diameter and somewhat lighter clamping-segments.

By the construction and arrangement de scribed the rings are reversible and cannot be misplaced, the ribs 0 and recesses Oinsure correct alinement of the bolt-holes in the rings and flanges, and the device is easily and cheaply made and applied, requiring but litto the flanges.

2. The combination of three segmental clamps having concave inner surfaces to engage a shaft and oppositely-tapered outer sur faces, there being integral segmental flanges on the middle of said clamps and having boltopenings sixty degrees apart, rings having tapered central openings to engage the outer surfaces of the clamps and bolt-holes one hundred and twenty degrees apart, and bolts separately connecting the rings to the flanges.

3. The combination of three segmental clamps having straight concave inner surfaces and oppositely-taperedconvex outersur- 'In testimony whereof I afiix my signature faces, there being integral segmental flanges in presence of two witnesses. at the middle of said clamps, and longitudinal ribs 0n .the clamps, rings having tapered I JOHN HUTGHISON' openings to engage the clamps and recesses Witnesses: to engage the ribs, and bolts separately coni LYMAN B. TRUMBULL,

meeting the rings to the flanges. ROBERT A. SMITH. 

